Ventilating attachment.



, F. A. DUNN. VENTILATING ATTACHMENT. APPLICATION FILED MAR.25,`I`9I6.

Patented Apr. 24', 1917.

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UNITED T OFFICE.

' VENTILATING ATTACHMENT.

Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed March 25, 1916. Serial No. 86,721.

To all whom t may' concern.'

Be it known that I, FREEMAN A. DUNN, a

citizen of the '.United States, residing at Keokuk, in the county of Lee and State of Iowa, have invented certain new and useful Improvements in Ventilating Attachments, of which the following is a specication.

y invention relates to .new and useful improvements in combined ventilating attachments and floor warmers, the primary object being the lprovision of a simple and effective device for warming floors which will, at the same time, cause circulation of air throughout the entire room. j

A still further object of my invention 'consists in the provision -of a device which will coperate with any ordinaryl type of stove, whereby the heat from the stove may be utilized as a means for creatingan up current from the. floor, withthe" result that the colder air drawn away from the floor is replaced bywarmer air displaced from the upper portion of the room.

In this connection, a still further object of my invention consists in constructing the devicev in detachable sections connected by coupling collars in order that it may be ad# )usted tostovesof different styles, and furthervin orderthat it may be stored in a relatively small `space when not kin use, the -secA tions, when separated, beinglcapable of'bein gwdisposed one within 'the other to economize 1n space. f f l l v vWith these and other objcctsfin view, my invention will be more vfully described, illustrated in the accompanying drawings, and

then specifically pointed out in ,they claims which are `attached to and form a part of this application. v y

In the drawings: f 'i Figure 1 is a side elevation, showing my invention in use;

Flg. 2 is a central vertical sectional viewl of the device;

Fig. 3 'is a frontelevation yof the intermediate section of the device;

Figp4 is a transverse sectional view throughk one of the sections;

Fig. 5 is a side elevatiomshowing the device in knocked down condition for storage or shipment. w .v f

Corresponding and like parts are referred to in the following description and indicated vin all the views of the drawings by the same reference characters. v Y

Broadly speaking, my invention' compreconstruction,

hends a tubular body portion open at its ends and adaptedto be supported in vertical position with its lower end spaced slightly abovethe oorand with a portion of its length either engagingy or in close proximity to the heatedv portion of a stove. More specifically, they preferred embodiment of myV invention includes a frusto-conical base 10, preferably formed of cast iron or other suitable metal, beingprovided at its smaller upper end with an upstanding annular flange or collar 11 andv at its lower end with peripherally spaced supporting feet 12. Cooperating' with this base are a plurality of body sections 13, 14 and 15 and a plurality of connecting rings 16, 1 7, 18 and 19. Each Lof y.these connecting rings -is preferably formed of sheet' metal and of an internal diameter such that. it may be tted snugly over the Iupstandingange 1:1: of. the base.

Furthermore, each of the rings, intermediate its height,.is formed with an instruck peripheral bead 20.

Each of the body sections 13, 14 and 15 is also preferably formed of suitable sheet metal, such as sheet iron, the metal being bent to form a cylindrical body and having one edge bent outwardly and back upon n itself, as shown at 21 in Fig. 4 and then rebent,. as., shown .at 22,. to provide a .seat 23 for the opposite edge of the strip of metal formingthe body member. Because of this one longitudinal edge of a body member may be inserted in the seat 28 formed at the other edge of the body member, whereby the body member will be closed throughout its length or the body member may be expanded to space its opposed edges from each other. The intermediate section of the device, which, inthev present instance,

.is indicated by the numeral 14, is provided extending slits 25 and in l being wings 28 formed adjacent their upper and lower ends with U- haped clefts or slits 9.9, dening tongues 30 which are inbent in such a manner that they may be inserted through the slots S25 and 26 to hold the hood to the intermediate portion 14 in such a manner as to surround the openings Q4 therein.

In use, one of the coupling rings or collars is positioned upon the base 10, the lower body section has its abutting edges interlocked, in the manner shown in Fig. 4, and its lower end inserted in the upper end of the collar 16.. The instruck bead 20 of the coupling member limits the seating of such member upon the base 10 and also acts as a stop and support for the lower end of the body member 13. A second coupling ring is positioned about the upper end of the body member 13, being held against downward movement over such member by its instruck bead and the intermediate member 14 has its abutting edges interlocked and its lower end seated in the upper end of thisl second coupling ring. In like manner, a third coupling ring is applied to the upper end of the intermediate body section and receives the lower end of the upper body section, the abutting edges of which are interlocked and held 1n such position by their coupling ring and by the Jfourth coupling ring which is secured about the upper end of the upper body section or member. Vhen the device has been so assembled, it is located with its open outer end of the head 27 disposed against a heated portion of a stove, indicated by the numeral 31. When so disposed, it will be clear that air entering the lower open portion of the hood will be heated and willpass through the openings 24: of the intermediate section of the body and because of its heat pass upwardly through'the body and out at the top in the upper portion of the room. As a result, an upward current of air will be created in the lower portion of the device tending to create a partial vacuum therein so that the cold air in the vicinity of the iioor will be drawn up through the base and through the device and discharged at a considerably higher elevation. 'Ihe discharging of this colder air from the top of the device tends to displace the heated air in the upper portion of the room, while at the same time the withdrawing of cold air from the vicinity of the floor tends to create a vacuum near the floor and, consequently, to draw the heated air in the upper portion of the room downwardly. As will be apparent, this causes a partial circulation of air throughout the entire room, the heated air in the upper portion of the room drawn downwardly along' the floor and the /ioor thereby warmed.

Obviously, the upper section ofthe body may be dispensed with, if desired, or the intermediatesection may be applied directly to the lower coupling collar and the lower body section dispensed with, depending upon the type of stove with which the device is employed and upon the elevation at which it is desirable to discharge the air drawn from the lower portion of the room. Obviously, also if the room is exceptionally high, added body sections may be readily applied, together with suitable coupling rings Jfor securing them in place.

When the device is to be shipped or stored, all parts may be separated and then assembled in the manner shown in Fig. 5, in which the coupling rings are seated directly one upon the other, the lowermost being positioned about the upstanding flange of the base and in which the interlocking edges of the body members are separated in order that one body member1 may be spread somewhat to inclose the vertically alined coupling rings and the other body members corspondingly spread so that each may encircle any body members disposed within it. The hood 27 may then be inserted in the innermost body member, as shown, being readily removable from the intermediate body portion 14 to which it is normally attached.

It will, of course, be apparent that various minor changes in construction may be made without aecting the principle of operation of my device and for this reason I reserve the right to make any changes, within the scope of the appended claims.

I-Iavin'g thus described the invention, what is claimed as'new is:

1. A Ventilating attachment including a tubular body member adapted to be positioned with its intermediate portion in juxtaposition to the heated portion of a stove, means Jfor 'supporting the body member in substantially vertical position with its lower end spaced above the floor, and an outwardly projecting hood open at its bottom formed intermediate the length of the body member to engage a stove, the portion of the body member inclosed by the hood being formed with openings.

2. A Ventilating attachment including an annular base having supporting feet and an upwardly directed annular flange, a plurality of tubular body members equal in external diameter to the external diameter of the iange, and a plurality of coupling rings equal in internal diameter to the external diameter of the body members and flange and each formed intermediate its length with an inwardly directed stop bead, whereby the coupling rings may connect the body members end to end and one of such body members to the flange, one of the body members being 'formed in its side with an opening, and a hood open at its lower end carried by such body member and inclosing the opening.

3. A Ventilating attachmentincluding an bers to the flange, one of the body members annular base having supporting feet and an being formed in its side with an opening,

`upwardly directedk annular flange, a pluand a hood carried by such body member rality of tubular body members equal in exand partially inclosing the opening, said ternal diameter to the external diameter of hood being open at its front and bottom.

the flange, and a plurality ofcoupling rings 5. A Ventilating attachment including an equal in internal diameter to the external annular base having supporting feet and an diameter of the body members and liange upwardly directed annular flange, a pluan inwardly directed stop bead, whereby the ternal diameter to the external diameter of coupling rings may connect the body memt e flange, and a plurality of coupling rings bers end to end and one of such body memequal in internal diameter to the external bers to the flange, one of the body members diameter of the body members and liange eing formed in its side with an opening, and each formed intermediate its length with a hood carried by such body member and an inwardly directed stop bead, whereby the artially inclosing the opening, andk means coupling rings may connect the body memor detachably connecting the hood to the bers end to end and one of such body mem body member. bers to the flange, one of the body members 4; A Ventilating attachment including an being formed in its side with an opening, annular base havingsupporting feet and an and a hood carried by such body member and upwardly directed annular flange', a plupartially inclosing the opening, said hood and each formed intermediate its length with the ody member. an inwardly directed stop bead, whereby the In testimony whereof I aliix my signature. coupling rings may connect the body mem- 30 bers end to end and one of such body mem- FREEMAN A. DUNN. [1.. s.]

Copies of this ypatent may be obtained for five cents each, by addressing the Commissioner of Patents,

y Washington, D. 0. 

